AS Level Biology this is all about unit 1 of AS biology 2.0 / 5 based on 1 rating ? BiologyASAQA Created by: Sophie RichardsCreated on: 08-01-13 19:46 where in the heart is the atrioventricular node based? between the atria 1 of 7 During cell fractionation, why is the solution kept isotonic? to prevent organelles bursting or shrinking due to osmosis 2 of 7 During cell fractionation, why is the solution kept cold? to reduce enzyme activity 3 of 7 During cell fractionation, why is the solution buffered? to maintain a constant pH 4 of 7 what is the equation for magnification? magnification = size of image/size of object 5 of 7 How do you work out Cardiac Output? stroke volume x heart rate 6 of 7 what is the equation for pulmonary ventilation? tidal volume x ventilation rate 7 of 7
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